<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=
    , initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .container{
            width: 960px;
            margin: 0 auto;
        }
        .header{
            height: 40px;
            background-color: aqua
        }
        .header > .container{
            height: 40px;
            background-color: rgb(40, 40, 253)
        }
        .container > .content{
            background-color: rgb(255, 73, 255)
        }
        .container > .right{
            background-color: rgb(226, 226, 0)
        }
        .content{
            height:800px;
            width:700px;
            float: left;
            margin-top: 10px;
        }
        .right{
            height: 300px;
            width: 260px;
            float:right;
            margin-top: 10px;
        }
    </style>
</head>
<body>
    <div class="header">
        <div class="container"></div>
    </div>
    <div class="mid">
        <div class="container">
            <div class="content"></div>
            <div class="right"></div>
            <div class="right"></div>
        </div>    
    </div>
    <div class="footer"></div>
    <div class="container">

    </div>
</body>
</html>